स्रस्तगङ्गादुकूला
स्रस्त · गङ्गा · दुकूल
दुकूलम् इव गङ्गा
कर्मधारय — the Ganges, that is like a silk
स्रस्तं गङ्गादुकूलं यस्याः सा
बहुव्रीहि — she whose Ganges-silk has slipped
बहुव्रीहि — it refers to अलकाम्. her Ganges-silk slipped from her — and **Mallinātha names the kind of compound the inner member is**, which he has not done for any compound in the canto: गङ्गा दुकूलं शुभ्रवस्त्रम् इव इत्युपमितसमासः. An उपमितसमास is the compound in which the thing being compared stands first and the standard second, with no word for the property they share: 'the Ganges, which is like a white cloth'. The rule behind it is Pāṇini 2.1.56 उपमितं व्याघ्रादिभिः सामान्याप्रयोगे, and its condition — that no word for the shared property be used — is exactly the condition that was *not* met at 1.61, where शोभा was stated and the figure was therefore a full simile rather than a compound. Then he gives the other reading in four words: अन्यत्र तु गङ्गैव दुकूलम्, 'elsewhere, the Ganges *is* the silk.' Not a comparison but an identity — because on that side of the stanza the woman is real and the river is her garment. दुकूल he takes from the Śabdārṇava in the sense सूक्ष्मवस्त्र, fine cloth; and the outer bahuvrīhi he resolves तत्स्रस्तं यस्यास्ताम्, of the city with the river fallen down its side
uncheckedMallinātha, Sañjīvinī, who names the inner compound उपमितसमास, cites the Śabdārṇava for दुकूल, gives the second reading with अन्यत्र, and resolves the bahuvrīhi with यस्याः; Pāṇini 2.1.56 by way of skt-mcp. `vendor/meghaduta-sanjivini.itx` prints `dukUlama shubhravastram` where the line wants दुकूलं शुभ्रवस्त्रम्, and the run is read through“gaṅgā dukūlaṃ śubhravastramivetyupamitasamāsaḥ || “dukūlaṃ sūkṣmavastre syāduttarīye sitāṃśuke” iti śabdārṇave || anyatra tu gaṅgaiva dukūlam || tatsrastaṃ yasyāstāṃ tathoktām”